Printing stencil and method of making same



1,626,323 April 26 a 1927 s. s. BENDICK PRINTING STENCIL AND METHOD OF MAKING SAME Filed Sept. 21. 1925 INVENTOR Sidney fiBefidzcif.

Patented Apr. 2%, 1927.

stares aezesza srnnnv s. BENnIoK, on new Yemen. Y.

PRINTING STENCIL AND IYIETHOD GI IMAKING SAME.

Application filed September 21, 1925. Serial No. 57,748. i

This invention relates to devices for printing characters and the like, and more particularly to self-inking stencils and the method of making the stencil sheet, though it is noted that the invention is not limited.

to stencils nor in some respects even to de vices for printing characters.

One object of the lnvention s to provide an improved stencil sheet having means;

vide a stencil or other printing device which may be applied with a rolling motion without danger of smearing. I

one of the important objects ofmy present device relates to the manner whereby the component parts may be readily assembled, thereby to increase the economy of manufacture.

Another object is to provide for ease in distributing the ink within the device so as to obtain legible printing throughout the the stencil on the material in operation.

full stencil face.

Another object has to do with the manner in which the stencil is readily affixed or removed, for replacement orcleaning. 7

Another object relates to the. structure-of the stencil backing whereby it provides for a semi-resilient ink-holding structure of suitable permeability and stiffness to support stenci ling pressure.

A further ob'ect is the provision of means on the stencil whereby to limit excess pressure upon the stencil and to prevent the stencil side slipping when in use, thereby obviating smudging. a An added feature of improvement is obtained by the'use, as a stenciling plate or sheet, of a thin metallic sheet, flexible nonabsorbent and practically abuse-proof, and it will be hereinafter noted that this metallic stencil sheet and its manner of making provide for a printing face which confines the ink in cups to the desired outline. as well as supplies ink thereto, and also furnishes a printing face, from which the printed or stamped impression is taken. Otherrobjects ofthe invention are to improve generally the simplicity and efficiency of such devices and methods of making the stencil sheet and to provide a device or apparatus of this kind which is economical to manufacture and Y which is economical, durable, convenientand reliable in operation. 1 Still other objects of the "invention will appear as the description proceeds; and while herein details of the invention are described and claimed, the invention is. not 7 limited to these, since many and various changes. may be madewithout departing fromthe scope of the inventionas claimed in the broader claims. V The inventive features forthe accomplishment of these and other, objects are shown herein in connection with an improved printing stencilwhich, briefly stated, includes a. box having a removable back and inturned lower flanges carrying adownwardly curved yieldable absorbent printing bed having margins resting on said flanges against which is disposed a flexible stencil sheet having characters pierced thereon by a needle entering the sheet from the inner face, to provide perforations each surrounded by projected upset edges. Serrated rockers at the ends form gauges to hold the box spaced from the materialto be marked and the serrated lower edges prevent the slipping of I In the accompanying drawing, showing by way of example, one of many possible embodiments of the invention,

Fig. 1 is a perspective view of the-box or casing; I V

- Fig. 2 1s a-itransverse sectlonal view showing details of the device;

Fig. 3 is a perspective v1ew of the stencil printing bed, the layers being separated, to" show the construction andrelation of parts Fig. 6 is an enlarged fragmentary sectional view illustrating the method of piercing the stencil; j F

The various parts of my improved printing stencil are mounted in or on a -rectangu lar casing or box 10 having upstanding side and end walls 11 and .12, inturned side and end flanges 13 and 14 at thelower edge of I V the walls leaving an intramarginal opening 15. Downwardly disposed segmental rock ers or end pieces 18 formed. on the end flanges 14 formgauges to hold thebox "10 properly spaced from the .material to be marked and are provided 'with serrated;

lower edge-1519 to prevent the slipping of the stencil when it is ioeked or rol-led'ov'er the material in operation. a

A yieldable printing bed (Fig. car ried by said frame is formed Withflat marginal portions 21 resting'on said side flanges 13. The intramarginal portion 22 of the bed is downwardly curved to form an ink reservoir 23 and to have its lower face lie slightly below the curved plane defined by 3 lower layer of absorbent flannel adjacent to the screen layer.

Said bed-is sprung into said box to form a reliable friction fit for holding said layers clamped together I A block or back is reniov-ably disposed in said box with a friction 'fit'forining a coverfoi thefiiik reseri' oir and is provided witha bore- 36 in the: middle of-its outer face for the reception of a handle 37' {for manipu- Eating the stencil during the; printing opera= tion and for removing the backfor introducing the ink. a One of the end flanges l-flis" slitted and provided with downwardlypressed portions 39- between the slits forming alined fixed hinge members receiving the intuined ends d0 (Fig. 4-) of a rectangular one-piece Wire frame 41 disposable beneath the lower face of said flanges and having an opposite end portion 42 adapted to snap past projections 43 on oneof thei'ockers '18 to enga e the flange; and an outwardly bent ini dlportion 44 forming a handle.

A. flexible sten cil sheet of copper; brass paper or other suitable stencil-able material is held agai'nstsaid lower layer 30 by having its side edges caught under the side members 51 of said frame. 7 Said sheet is provided with characters 52 formed by perforations 54 Fig; 6) pierced by a reci procat'ory needle 55 inserted "at the inner face' 'of the stencil sheet and projected through the outer face to form the perforations 54 cacli' i'i such;

manner that it is surrounded by an annular projected upset edge 56 forming a cup-like or tube-like passage for introducing a large quantity of ink into or against the material to be printed upon, thereby to make the printing more indelible. Said edge also serves toconfine the introduced ink at: the point of introduction, thus preventing v smearing and spreading and also to form an annular printing or typeface offset from-1 the sheet for'piessing into-or u on the material" the ink fed through said passage, thereby to increase the permanence of' the a printing.

1,626,3 3 a i 77 V p The operations-i the device is very simple, and is obvious from the foregoing. The stencil sheet is perforated on a perforating machine; the needle following the letters,

members 51. whereupon the frame forced back. into place clamp ng the stencil sheet' on'the bottom of theffianges 13,1e.

The ,bacir (Fig.2) is removed to en mit' pouring inkinto the reservoir 23, Where it may be spread with a brush evenly upon a the perforated top layer 22' to permit theink to pass throughthe perforations25 and 27 and the screen 29 into the felt layer 30, and thence into the tubehke passages formed-by the upset edgehti. I 7

The serrated edges 19 are then rocked upon the paper, fabric Orr-other material to be printed upon, the serration preventing sl ipping of" the stencil on the material. The rockers or gauges 18 permit thestencil to be pressed upon the material with an even pressure, and as the sheet is rocked over the material, ink in said passages adheres'to and is deposited upon the material, and the ink on said edges 56 is pressed into and ii-pon't'he.

material.

The perforations 25 and -27 and the open-- ings in the screen layer serve as conduits to I conduct the ink from the reservoir 23130 the absorbent layer 80 and thence to the stencil.

The perforations 27 also serve as sort of 'resurge reservoir to receive ink pressed back out of the absorbent layer during the'printing process. a a

I claim as my invention:

1. In coijiibination a pad inker; and a stencil sheet cooperating with the padi'nker and having cup-likeperforations.

2. In combination a pad inker and a .st-enci'l'sheet cooperating Wltll the pad nkei' and hav ng perforations each provided with a projected upset edge portion p In combination, an absorbent printing bedyand a stencil slieetlield againstthe lower face of the bed and provided with" characters formed by perforations each sur ro'unded'byaprojected upset edge forming lit) a tube-like passage for introducin theinlr V to the material to-be stenc-iled'.

4411i combii'iation, a downwardlylcurved" absorbent printing bed; and a flexible stein cil sheet held against the lower faced the bed and providedwith perforations forming a passage for introducing the ink to the material to be stencilecl','eacli surrounded by a printing face offset from the sheet.

In combination, an absorbentprinting bed; and a flexible sheet metal stencil'held against the lower face of the bed and pro vided with characters" formed by perfom tions each surrounded by projected upset edges forming a cup-like or tube-like passage for introducing the ink into or against the material to be stenciled, said edge serving to confine the introduced'ink at the point of introduction, and also to form an annular type or printing face offset from for preventing during printing operation movement on the surface to be printed of said bed and stencil sheet in the longitudinal line of said bed. 7

'TIn combination, a stencil bed; a stencil. sheet cooperating'with said bed; and means appurtenant to the ends of the stencil bed engaging the surface to be stenciled for preventing during stenciling operation movement of said bed and stencil sheet on said surface in the longitudinal line of said bed.

8. In combination, a support; spaced downwardly disposed gauges beneath the support; and a yieldable printing bed between the gauges.

9. In combination, a box; a yieldable printing bed secured beneath thev box; a stencil sheet held against said bed; and downwardly disposed gauges provided with serrated lower edges at the opposite edges of said bed.

10. In combination, a box having downwardly disposed rockers; a yieldable absor bent printing bed having a downwardly curved intramarginal portion approximately coaxialwith the rockers; and a flexible sten-. cil sheet held against said bed.

11. In combination, a box having downwardly disposed rockers provided with serrated lower edges; and a yieldable printing bed between the rockers having a clownwardly curved intramarginal portion.

12. In combination, a box having walls,

inturned flanges at the lower edge of the walls, and downwardly disposed rock rs provided with serrated lower edges to prevent the slipping of the stencil on the material in operation; a yieldable printing bed carried by said box and formed with flat marginal portions resting on said flanges, the intramarginal portion of the bed b ing downwardly curved to form an ink reservoir and to have its lower face he slightly below the curved plane defined by said lower edges; and a stencil sheet held against the lower face of the bed.

13. In, combination, a box having walls, intnrn-ed flanges at the lower edge of the walls; a y eldable printing bed carried by said box and having fiat marginal portions resting on said flanges, an intramar inal portion of the bed being downwardly curved; said bed comprising a top layer of perforated spring metal an intermediate layer of absorbent material having larger perforations than said top layer, a layer of wire mesh and a lower layer of flannel; said. bed being sprung into said box to form a yieldable friction fit for holding said layers clamped together; and a tremolo stencil sheet held against said lower layer by said frame.

1%. A stencil bed comprisinga top layer of perforated sheet, metal, a layerof absorbent felt having perforationstherein, a layer of wire meshand a lower layer of flannel.

5. In combination, a layer of yieldable rorate non-absorbent material constituting an ink distributing reservoir; and a layer of yieldable perforate absorbent mate rial, a layer of yieldable reticulated 'non-al sorbent' material, and a layer of yieldable" imperforate absorbent material cooperating with each other for receiving and d stributing in}: from the lirst mentioned layer and forming therewith a stencil bed.

16. In combination, a layer of yieldable material constituting anfinlr distributing reservoir; a plurality of layers of yieldable malayer'of sheet metal having large distributing perforations, a yieldable layer of ab sorbent felt adpicent to the foundation layer and having larger perforations than saidfoundation layer. a screen layer of wire nesh against the yieldable layer and a lower layer of absorbent flanneladjacent to the sereenlayer.

18. In con'ibination, a box having'inturned lower flanges; a yieldable printing bed hay ing margins on said flanges and a downwardly curved intramarginal portion; a frame releasably disposed under the lower face of said flanges; and a flexible stencil sheet held against said bed by said frame.

19. In combination, .a rectangular casing or frame having upstanding side and end walls, inturned side and end flanges at the lower edge of thewalls leaving an intra marginal opening, and. downwardly. disposed endpieceson the inner edges of the end flanges forming gauges to hold the frame spaced from the material to be marked; a yieldable printing bed having margins on said side flanges and a downwardly curved intramarginal portion; one of said fl .iges being provided with pairs of slits and downwardly pressed portions between the slits forming alined fixed hinge members tl'ieguage the opposite end having outpressed IQIOJQCUOHS nea r the adjacent flange;

a. frame disposable under the lower face of 7 said flanges and having lntnrned ends reeeived in said hinge members and having an opposite end portion adapted to snap past said projections against'the flange, and 7 an outwardly bent miilportion forming ahandle; and a flexible stencil sheet held against the lower face'of i-iald' bed with its sideedges caught under the side members I against said bed 5 and a block forming a back frictionelly received in the upper part of the box 21. In combination, abox; a yieldable absorbent printing bed secured to the lower part of the box and providing an ink rese1 Von"; astencil sheet. held against said bed; a block or back forming a cover for the ink reservoir and i'einovably disposed in said box With a friction and provided with a bore; and'a handle in said bore for manipu leting the device during "the nrintingnoperia tlon and for removing the back from the box for 'introdncinginki'nto the reservoir.

Signed at New, York in the county of New York-and State of New York thisgl'Tthfl i SIDNEY s; BENDIGK, 

